I got problems with making a Python socket server receive commands from a Python socket client

Question

I got problems with making a Python socket server receive commands from a Python socket client. The server and client can send text to each other but I can't make text from the client trigger an event on the server. Could any one help me? I'm using Python 3.4.

server.py

import socket 

host = ''
port = 1010

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.bind((host, port)) 
s.listen(1) 
conn, addr = s.accept() 
print ("Connection from", addr) 
while True: 
    databytes = conn.recv(1024)
    if not databytes: break
    data = databytes.decode('utf-8')
    print("Recieved: "+(data))
    response = input("Reply: ")
    if data == "dodo":
        print("hejhej")
    if response == "exit": 
        break
    conn.sendall(response.encode('utf-8')) 
conn.close()

In server.py I tried to make the word "dodo" trigger print("hejhej").

client.py

import socket 

host = '127.0.0.1'
port = 1010 

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.connect((host, port)) 
print("Connected to "+(host)+" on port "+str(port)) 
initialMessage = input("Send: ") 
s.sendall(initialMessage.encode('utf-8'))  

while True: 
 data = s.recv(1024) 
 print("Recieved: "+(data.decode('utf-8')))
 response = input("Reply: ") 
 if response == "exit": 
     break
 s.sendall(response.encode('utf-8')) 
s.close()

tijko · Accepted Answer · 2015-06-21 20:45:51Z

1

Everything here works fine but, maybe not the way you want it to. If you switch the order on a couple of the lines it will display your event string before you enter your server response.

import socket 

host = ''
port = 1010

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 
s.bind((host, port)) 
s.listen(1) 
conn, addr = s.accept() 
print ("Connection from", addr) 
while True: 
    databytes = conn.recv(1024)
    if not databytes: break
    data = databytes.decode('utf-8')
    print("Recieved: "+(data))
    if data == "dodo":  # moved to before the `input` call
        print("hejhej")
    response = input("Reply: ")
    if response == "exit": 
        break
    conn.sendall(response.encode('utf-8')) 
conn.close()

answered Jun 21, 2015 at 20:45

tijko

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